Quinton Carter is facing an even harder uphill climb toward getting himself back on the football field next season. The Broncos safety hurt his knee in training camp last year and played just three games last season, ending up on injured reserve after having microfracture surgery. He spent much of the offseason rehabilitating in Denver, according to USA Today.

Well, that’s not the only thing he spent his offseason doing, apparently. Carter also took some side trips to Las Vegas, his hometown, and his return from the knee injury has now been complicated by felony charges, USA Today reports.

Carter was arrested last weekend, with officials saying he cheated on a craps game at Texas Station casino in Las Vegas. Carter is accused of adding money to his bets after the dice were already rolled.

The worst part? The total amount that Carter is accused of adding to his bets, which, as a reminder, is what led to felony charges, is just $15. He allegedly added three $5 chips to his bets, according to The Associated Press.

The charges Carter incurred — three counts of fraudulent act in a gaming establishment — each carry up to six years in prison and a $10,000 fine, according to The Associated Press. Carter also has a warrant charge on his record for failing to complete counseling after he pleaded guilty in 2011 to a misdemeanor marijuana possession charge, according to USA Today.

Carter, 24, was booked and released at Clark County jail in Las Vegas, according to the report. He has since apologized for the incident.

“I am fully confident that when the facts come out, I will be cleared,” he said in a statement, according to USA Today. “I am truly sorry for the negative attention this has brought the Broncos, our fans and the league. I am fully focused on getting 100 percent healthy and making a positive impact on the Broncos this year.”

Carter, who was picked in the fourth round in 2011 out of Oklahoma, started 10 games for the Broncos in 2011, with his total salary at $488,750 for that season. In 2012, he made $578,750 in the second year of his four-year, $2.495 million contract.